Understanding prime ministerial leadership in the United Kingdom and Japan in the 21st century: introduction to a special issue

The introduction to this special issue begins by presenting a recent puzzle – the increasingly strong position of the Japanese prime minister, who has traditionally been regarded as weak, in contrast to the increasingly fragile position of the United Kingdom prime minister, who has traditionally been regarded as strong. To make sense of these developments, the introduction reviews existing academic perspectives related to prime ministerial leadership with a specific focus on the literature on the UK and Japanese prime ministers. It subdivides our understanding of prime ministerial leadership into three distinct but inter-related levels of analysis. First, the institutional setting, which concentrates attention upon prime ministers’ relations with the machinery of government and a range of institutions including the executive, legislature and judiciary, and relates to prime ministerial versus cabinet government debates, and the core executive model. Second, the party context, which focuses on prime ministers as leaders of their political parties and debates surrounding party centralisation, internal party cohesion and leadership selection and ejection. Third, the role of agency within these above two settings and in relation to the broader public, which includes the personal skills and performative styles of individual prime ministers.